window.cpp

很牛的GUI源码wxWidgets-2.8.0.zip 可在多种平台下运行.

/////////////////////////////////////////////////////////////////////////////
// Name:        src/mac/carbon/window.cpp
// Purpose:     wxWindowMac
// Author:      Stefan Csomor
// Modified by:
// Created:     1998-01-01
// RCS-ID:      $Id: window.cpp,v 1.322 2006/10/31 08:49:45 RD Exp $
// Copyright:   (c) Stefan Csomor
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#include "wx/wxprec.h"

#include "wx/window.h"

#ifndef WX_PRECOMP
    #include "wx/log.h"
    #include "wx/app.h"
    #include "wx/utils.h"
    #include "wx/panel.h"
    #include "wx/frame.h"
    #include "wx/dc.h"
    #include "wx/dcclient.h"
    #include "wx/button.h"
    #include "wx/menu.h"
    #include "wx/dialog.h"
    #include "wx/settings.h"
    #include "wx/msgdlg.h"
    #include "wx/scrolbar.h"
    #include "wx/statbox.h"
    #include "wx/textctrl.h"
    #include "wx/toolbar.h"
    #include "wx/layout.h"
    #include "wx/statusbr.h"
    #include "wx/menuitem.h"
#endif

#include "wx/tooltip.h"
#include "wx/spinctrl.h"
#include "wx/geometry.h"

#if wxUSE_CARET
    #include "wx/caret.h"
#endif

#if wxUSE_DRAG_AND_DROP
#include "wx/dnd.h"
#endif

#include "wx/mac/uma.h"

#define MAC_SCROLLBAR_SIZE 15
#define MAC_SMALL_SCROLLBAR_SIZE 11

#ifndef __DARWIN__
#include <Windows.h>
#include <ToolUtils.h>
#include <Scrap.h>
#include <MacTextEditor.h>
#endif

#if TARGET_API_MAC_OSX
#ifndef __HIVIEW__
    #include <HIToolbox/HIView.h>
#endif
#endif

#include <string.h>

#ifdef __WXUNIVERSAL__
    IMPLEMENT_ABSTRACT_CLASS(wxWindowMac, wxWindowBase)
#else
    IMPLEMENT_DYNAMIC_CLASS(wxWindow, wxWindowBase)
#endif

BEGIN_EVENT_TABLE(wxWindowMac, wxWindowBase)
    EVT_NC_PAINT(wxWindowMac::OnNcPaint)
    EVT_ERASE_BACKGROUND(wxWindowMac::OnEraseBackground)
#if TARGET_API_MAC_OSX
    EVT_PAINT(wxWindowMac::OnPaint)
#endif
    EVT_SET_FOCUS(wxWindowMac::OnSetFocus)
    EVT_KILL_FOCUS(wxWindowMac::OnSetFocus)
    EVT_MOUSE_EVENTS(wxWindowMac::OnMouseEvent)
END_EVENT_TABLE()

#define wxMAC_DEBUG_REDRAW 0
#ifndef wxMAC_DEBUG_REDRAW
#define wxMAC_DEBUG_REDRAW 0
#endif

// ---------------------------------------------------------------------------
// Utility Routines to move between different coordinate systems
// ---------------------------------------------------------------------------

/*
 * Right now we have the following setup :
 * a border that is not part of the native control is always outside the
 * control's border (otherwise we loose all native intelligence, future ways
 * may be to have a second embedding control responsible for drawing borders
 * and backgrounds eventually)
 * so all this border calculations have to be taken into account when calling
 * native methods or getting native oriented data
 * so we have three coordinate systems here
 * wx client coordinates
 * wx window coordinates (including window frames)
 * native coordinates
 */

//
// originating from native control
//


void wxMacNativeToWindow( const wxWindow* window , RgnHandle handle )
{
    OffsetRgn( handle , window->MacGetLeftBorderSize() , window->MacGetTopBorderSize() ) ;
}

void wxMacNativeToWindow( const wxWindow* window , Rect *rect )
{
    OffsetRect( rect , window->MacGetLeftBorderSize() , window->MacGetTopBorderSize() ) ;
}

//
// directed towards native control
//

void wxMacWindowToNative( const wxWindow* window , RgnHandle handle )
{
    OffsetRgn( handle , -window->MacGetLeftBorderSize() , -window->MacGetTopBorderSize() );
}

void wxMacWindowToNative( const wxWindow* window , Rect *rect )
{
    OffsetRect( rect , -window->MacGetLeftBorderSize() , -window->MacGetTopBorderSize() ) ;
}

// ---------------------------------------------------------------------------
// Carbon Events
// ---------------------------------------------------------------------------

#if TARGET_API_MAC_OSX

#if MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_3
enum
{
    kEventControlVisibilityChanged = 157
};
#endif

#endif

static const EventTypeSpec eventList[] =
{
    { kEventClassCommand, kEventProcessCommand } ,
    { kEventClassCommand, kEventCommandUpdateStatus } ,

    { kEventClassControl , kEventControlHit } ,

    { kEventClassTextInput, kEventTextInputUnicodeForKeyEvent } ,
    { kEventClassTextInput, kEventTextInputUpdateActiveInputArea } ,

    { kEventClassControl , kEventControlDraw } ,
#if TARGET_API_MAC_OSX
    { kEventClassControl , kEventControlVisibilityChanged } ,
    { kEventClassControl , kEventControlEnabledStateChanged } ,
    { kEventClassControl , kEventControlHiliteChanged } ,
#endif
    { kEventClassControl , kEventControlSetFocusPart } ,

    { kEventClassService , kEventServiceGetTypes },
    { kEventClassService , kEventServiceCopy },
    { kEventClassService , kEventServicePaste },

//    { kEventClassControl , kEventControlInvalidateForSizeChange } , // 10.3 only
//    { kEventClassControl , kEventControlBoundsChanged } ,
} ;

static pascal OSStatus wxMacWindowControlEventHandler( EventHandlerCallRef handler , EventRef event , void *data )
{
    OSStatus result = eventNotHandledErr ;

    wxMacCarbonEvent cEvent( event ) ;

    ControlRef controlRef ;
    wxWindowMac* thisWindow = (wxWindowMac*) data ;

    cEvent.GetParameter( kEventParamDirectObject , &controlRef ) ;

    switch ( GetEventKind( event ) )
    {
#if TARGET_API_MAC_OSX
        case kEventControlDraw :
            {
                RgnHandle updateRgn = NULL ;
                RgnHandle allocatedRgn = NULL ;
                wxRegion visRegion = thisWindow->MacGetVisibleRegion() ;

                if ( cEvent.GetParameter<RgnHandle>(kEventParamRgnHandle, &updateRgn) != noErr )
                {
                    updateRgn = (RgnHandle) visRegion.GetWXHRGN() ;
                }
                else
                {
                    if ( thisWindow->MacGetLeftBorderSize() != 0 || thisWindow->MacGetTopBorderSize() != 0 )
                    {
                        // as this update region is in native window locals we must adapt it to wx window local
                        allocatedRgn = NewRgn() ;
                        CopyRgn( updateRgn , allocatedRgn ) ;

                        // hide the given region by the new region that must be shifted
                        wxMacNativeToWindow( thisWindow , allocatedRgn ) ;
                        updateRgn = allocatedRgn ;
                    }
                }

                Rect rgnBounds ;
                GetRegionBounds( updateRgn , &rgnBounds ) ;

#if wxMAC_DEBUG_REDRAW
                if ( thisWindow->MacIsUserPane() )
                {
                    static float color = 0.5 ;
                    static channel = 0 ;
                    HIRect bounds;
                    CGContextRef cgContext = cEvent.GetParameter<CGContextRef>(kEventParamCGContextRef) ;

                    HIViewGetBounds( controlRef, &bounds );
                    CGContextSetRGBFillColor( cgContext, channel == 0 ? color : 0.5 ,
                        channel == 1 ? color : 0.5 , channel == 2 ? color : 0.5 , 1 );
                    CGContextFillRect( cgContext, bounds );
                    color += 0.1 ;
                    if ( color > 0.9 )
                    {
                        color = 0.5 ;
                        channel++ ;
                        if ( channel == 3 )
                            channel = 0 ;
                    }
                }
#endif

                {
#if wxMAC_USE_CORE_GRAPHICS
                    bool created = false ;
                    CGContextRef cgContext = NULL ;
                    OSStatus err = cEvent.GetParameter<CGContextRef>(kEventParamCGContextRef, &cgContext) ;
                    wxASSERT_MSG( err == noErr , wxT("Unable to retrieve CGContextRef") ) ;
                    thisWindow->MacSetCGContextRef( cgContext ) ;

                    {
                        wxMacCGContextStateSaver sg( cgContext ) ;
                        float alpha = 1.0 ;
                        {
                            wxWindow* iter = thisWindow ;
                            while ( iter ) 
                            {
                                alpha *= (float) iter->GetTransparent()/255.0 ;
                                if ( iter->IsTopLevel() )
                                    iter = NULL ;
                                else
                                    iter = iter->GetParent() ;
                            }
                        }
                        CGContextSetAlpha( cgContext , alpha ) ;
#endif
                        if ( thisWindow->MacDoRedraw( updateRgn , cEvent.GetTicks() ) )
                            result = noErr ;

#if wxMAC_USE_CORE_GRAPHICS
                        thisWindow->MacSetCGContextRef( NULL ) ;
                    }

                    if ( created )
                        CGContextRelease( cgContext ) ;
#endif
                }

                if ( allocatedRgn )
                    DisposeRgn( allocatedRgn ) ;
            }
            break ;

        case kEventControlVisibilityChanged :
            thisWindow->MacVisibilityChanged() ;
            break ;

        case kEventControlEnabledStateChanged :
            thisWindow->MacEnabledStateChanged() ;
            break ;

        case kEventControlHiliteChanged :
            thisWindow->MacHiliteChanged() ;
            break ;
#endif

        // we emulate this event under Carbon CFM
        case kEventControlSetFocusPart :
            {
                Boolean focusEverything = false ;
                ControlPartCode controlPart = cEvent.GetParameter<ControlPartCode>(kEventParamControlPart , typeControlPartCode );

#ifdef __WXMAC_OSX__
                if ( cEvent.GetParameter<Boolean>(kEventParamControlFocusEverything , &focusEverything ) == noErr )
                {
                }
#endif

                if ( controlPart == kControlFocusNoPart )
                {
#if wxUSE_CARET
                    if ( thisWindow->GetCaret() )
                        thisWindow->GetCaret()->OnKillFocus();
#endif

                    static bool inKillFocusEvent = false ;

                    if ( !inKillFocusEvent )
                    {
                        inKillFocusEvent = true ;
                        wxFocusEvent event( wxEVT_KILL_FOCUS, thisWindow->GetId());
                        event.SetEventObject(thisWindow);
                        thisWindow->GetEventHandler()->ProcessEvent(event) ;
                        inKillFocusEvent = false ;
                    }
                }
                else
                {
                    // panel wants to track the window which was the last to have focus in it
                    wxChildFocusEvent eventFocus(thisWindow);
                    thisWindow->GetEventHandler()->ProcessEvent(eventFocus);

#if wxUSE_CARET
                    if ( thisWindow->GetCaret() )
                        thisWindow->GetCaret()->OnSetFocus();
#endif

                    wxFocusEvent event(wxEVT_SET_FOCUS, thisWindow->GetId());
                    event.SetEventObject(thisWindow);
                    thisWindow->GetEventHandler()->ProcessEvent(event) ;
                }

                if ( thisWindow->MacIsUserPane() )
                    result = noErr ;
            }
            break ;

        case kEventControlHit :
            result = thisWindow->MacControlHit( handler , event ) ;
            break ;

        default :
            break ;
    }

    return result ;
}

static pascal OSStatus wxMacWindowServiceEventHandler( EventHandlerCallRef handler , EventRef event , void *data )
{
    OSStatus result = eventNotHandledErr ;

    wxMacCarbonEvent cEvent( event ) ;

    ControlRef controlRef ;
    wxWindowMac* thisWindow = (wxWindowMac*) data ;
    wxTextCtrl* textCtrl = wxDynamicCast( thisWindow , wxTextCtrl ) ;
    cEvent.GetParameter( kEventParamDirectObject , &controlRef ) ;

    switch ( GetEventKind( event ) )
    {
        case kEventServiceGetTypes :
            if ( textCtrl )
            {
                long from, to ;
                textCtrl->GetSelection( &from , &to ) ;

                CFMutableArrayRef copyTypes = 0 , pasteTypes = 0;
                if ( from != to )
                    copyTypes = cEvent.GetParameter< CFMutableArrayRef >( kEventParamServiceCopyTypes , typeCFMutableArrayRef ) ;
                if ( textCtrl->IsEditable() )
                    pasteTypes = cEvent.GetParameter< CFMutableArrayRef >( kEventParamServicePasteTypes , typeCFMutableArrayRef ) ;

                static const OSType textDataTypes[] = { kTXNTextData /* , 'utxt', 'PICT', 'MooV', 'AIFF' */  };
                for ( size_t i = 0 ; i < WXSIZEOF(textDataTypes) ; ++i )
                {
                    CFStringRef typestring = CreateTypeStringWithOSType(textDataTypes[i]);
                    if ( typestring )
                    {
                        if ( copyTypes )
                            CFArrayAppendValue(copyTypes, typestring) ;
                        if ( pasteTypes )
                            CFArrayAppendValue(pasteTypes, typestring) ;

                        CFRelease( typestring ) ;
                    }
                }

                result = noErr ;
            }
            break ;

        case kEventServiceCopy :
            if ( textCtrl )
            {
                long from, to ;

                textCtrl->GetSelection( &from , &to ) ;
                wxString val = textCtrl->GetValue() ;
                val = val.Mid( from , to - from ) ;
                ScrapRef scrapRef = cEvent.GetParameter< ScrapRef > ( kEventParamScrapRef , typeScrapRef ) ;
                verify_noerr( ClearScrap( &scrapRef ) ) ;
                verify_noerr( PutScrapFlavor( scrapRef , kTXNTextData , 0 , val.length() , val.c_str() ) ) ;
                result = noErr ;
            }
            break ;

        case kEventServicePaste :
            if ( textCtrl )
            {
                ScrapRef scrapRef = cEvent.GetParameter< ScrapRef > ( kEventParamScrapRef , typeScrapRef ) ;
                Size textSize, pastedSize ;
                verify_noerr( GetScrapFlavorSize(scrapRef, kTXNTextData, &textSize) ) ;
                textSize++ ;
                char *content = new char[textSize] ;
                GetScrapFlavorData(scrapRef, kTXNTextData, &pastedSize, content );
                content[textSize - 1] = 0 ;

#if wxUSE_UNICODE
                textCtrl->WriteText( wxString( content , wxConvLocal ) );
#else
                textCtrl->WriteText( wxString( content ) ) ;
#endif

                delete[] content ;
                result = noErr ;
            }
            break ;

        default:
            break ;
    }

    return result ;
}